Hi Forum Members,

Please could you help me with a problem that has developed with my Ripmax Speed controller P-Extra BS10.

I have it installed in an old Billings fishing boat The Progress 5.

I have an old 2 channel futaba 27MHz radio to control this.

The motor will operate OK in forward mode but I get a strange noise like a high metallic hum from the controller when in reverse mode and the motor will not run.

The other strange thing is that if I disconnrct the Futaba receiver battery pack the radio transmitter will still operatte the receiver as if its getting its power fed back through the speed controller from the 6 volt motor battery.

Can the speed controller be tested in anyway or do you think that it is faulty and will need replacing?

Thank you.

Hi Keith & Colin,

Thank you for a quick reply.

The speed controller still will not work in reverse with the receiver batteries disconnected.

I agree then that it is not worth bothering with and will replace it along with a new UHF Radio Link set.

Also it gives me a chance to tidy up the wiring inside the boat at the same time.

Thank you both once again.